Halawa Quarry and Mill
Mineral resource occurrence
USGS ResearchHAWAII CITY ROCKHOUNDING HUB
Honolulu anchors Oahu volcanic geology including Diamond Head and other protected tuff/cone landscapes.
LOCAL INTERACTIVE MAP
Explore nearby Hawaii records without leaving this hub. Status, coordinate precision and access evidence determine whether a pin is a realistic field destination.

Reference photograph used for rock and mineral identification. It is not from this exact location or a guarantee that collecting is permitted.
This hub uses Honolulu as a geographic base, while the material mix is calculated from the records actually mapped around it.
Records are ordered by evidence status first, then distance. Open the detailed guide before treating any pin as a trip destination.
Mineral resource occurrence
USGS ResearchMineral resource occurrence
USGS ResearchMineral resource occurrence
USGS ResearchMineral resource occurrence
USGS ResearchMineral resource occurrence
USGS ResearchMineral resource occurrence
USGS ResearchMineral resource occurrence
USGS ResearchMineral resource occurrence
USGS ResearchMineral resource occurrence
USGS ResearchMineral resource occurrence
USGS ResearchMineral resource occurrence
USGS ResearchMineral resource occurrence
USGS ResearchMineral resource occurrence
USGS ResearchMineral resource occurrence
USGS ResearchMineral resource occurrence
USGS ResearchMineral resource occurrence
USGS Research